﻿//MooTools More, <http://mootools.net/more>. Copyright (c) 2006-2008 Valerio Proietti, <http://mad4milk.net>, MIT Style License.

/*
Script: Fx.Slide.js
Effect to slide an element in and out of view.

License:
MIT-style license.
*/

Fx.Slide = new Class({

    Extends: Fx,

    options: {
        mode: 'vertical'
    },

    initialize: function(element, options) {
        this.addEvent('complete', function() {
            this.open = (this.wrapper['offset' + this.layout.capitalize()] != 0);
            if (this.open && Browser.Engine.webkit419) this.element.dispose().inject(this.wrapper);
        }, true);
        this.element = this.subject = $(element);
        this.parent(options);
        var wrapper = this.element.retrieve('wrapper');
        this.wrapper = wrapper || new Element('div', {
            styles: $extend(this.element.getStyles('margin', 'position'), { 'overflow': 'hidden' })
        }).wraps(this.element);
        this.element.store('wrapper', this.wrapper).setStyle('margin', 0);
        this.now = [];
        this.open = true;
    },

    vertical: function() {
        this.margin = 'margin-top';
        this.layout = 'height';
        this.offset = this.element.offsetHeight;
    },

    horizontal: function() {
        this.margin = 'margin-left';
        this.layout = 'width';
        this.offset = this.element.offsetWidth;
    },

    set: function(now) {
        this.element.setStyle(this.margin, now[0]);
        this.wrapper.setStyle(this.layout, now[1]);
        return this;
    },

    compute: function(from, to, delta) {
        var now = [];
        var x = 2;
        x.times(function(i) {
            now[i] = Fx.compute(from[i], to[i], delta);
        });
        return now;
    },

    start: function(how, mode) {
        if (!this.check(arguments.callee, how, mode)) return this;
        this[mode || this.options.mode]();
        var margin = this.element.getStyle(this.margin).toInt();
        var layout = this.wrapper.getStyle(this.layout).toInt();
        var caseIn = [[margin, layout], [0, this.offset]];
        var caseOut = [[margin, layout], [-this.offset, 0]];
        var start;
        switch (how) {
            case 'in': start = caseIn; break;
            case 'out': start = caseOut; break;
            case 'toggle': start = (this.wrapper['offset' + this.layout.capitalize()] == 0) ? caseIn : caseOut;
        }
        return this.parent(start[0], start[1]);
    },

    slideIn: function(mode) {
        return this.start('in', mode);
    },

    slideOut: function(mode) {
        return this.start('out', mode);
    },

    hide: function(mode) {
        this[mode || this.options.mode]();
        this.open = false;
        return this.set([-this.offset, 0]);
    },

    show: function(mode) {
        this[mode || this.options.mode]();
        this.open = true;
        return this.set([0, this.offset]);
    },

    toggle: function(mode) {
        return this.start('toggle', mode);
    }

});

Element.Properties.slide = {

    set: function(options) {
        var slide = this.retrieve('slide');
        if (slide) slide.cancel();
        return this.eliminate('slide').store('slide:options', $extend({ link: 'cancel' }, options));
    },

    get: function(options) {
        if (options || !this.retrieve('slide')) {
            if (options || !this.retrieve('slide:options')) this.set('slide', options);
            this.store('slide', new Fx.Slide(this, this.retrieve('slide:options')));
        }
        return this.retrieve('slide');
    }

};

Element.implement({

    slide: function(how, mode) {
        how = how || 'toggle';
        var slide = this.get('slide'), toggle;
        switch (how) {
            case 'hide': slide.hide(mode); break;
            case 'show': slide.show(mode); break;
            case 'toggle':
                var flag = this.retrieve('slide:flag', slide.open);
                slide[(flag) ? 'slideOut' : 'slideIn'](mode);
                this.store('slide:flag', !flag);
                toggle = true;
                break;
            default: slide.start(how, mode);
        }
        if (!toggle) this.eliminate('slide:flag');
        return this;
    }

});


/*
Script: Fx.Scroll.js
Effect to smoothly scroll any element, including the window.

License:
MIT-style license.
*/

Fx.Scroll = new Class({

    Extends: Fx,

    options: {
        offset: { 'x': 0, 'y': 0 },
        wheelStops: true
    },

    initialize: function(element, options) {
        this.element = this.subject = $(element);
        this.parent(options);
        var cancel = this.cancel.bind(this, false);

        if ($type(this.element) != 'element') this.element = $(this.element.getDocument().body);

        var stopper = this.element;

        if (this.options.wheelStops) {
            this.addEvent('start', function() {
                stopper.addEvent('mousewheel', cancel);
            }, true);
            this.addEvent('complete', function() {
                stopper.removeEvent('mousewheel', cancel);
            }, true);
        }
    },

    set: function() {
        var now = Array.flatten(arguments);
        this.element.scrollTo(now[0], now[1]);
    },

    compute: function(from, to, delta) {
        var now = [];
        var x = 2;
        x.times(function(i) {
            now.push(Fx.compute(from[i], to[i], delta));
        });
        return now;
    },

    start: function(x, y) {
        if (!this.check(arguments.callee, x, y)) return this;
        var offsetSize = this.element.getSize(), scrollSize = this.element.getScrollSize();
        var scroll = this.element.getScroll(), values = { x: x, y: y };
        for (var z in values) {
            var max = scrollSize[z] - offsetSize[z];
            if ($chk(values[z])) values[z] = ($type(values[z]) == 'number') ? values[z].limit(0, max) : max;
            else values[z] = scroll[z];
            values[z] += this.options.offset[z];
        }
        return this.parent([scroll.x, scroll.y], [values.x, values.y]);
    },

    toTop: function() {
        return this.start(false, 0);
    },

    toLeft: function() {
        return this.start(0, false);
    },

    toRight: function() {
        return this.start('right', false);
    },

    toBottom: function() {
        return this.start(false, 'bottom');
    },

    toElement: function(el) {
        var position = $(el).getPosition(this.element);
        return this.start(position.x, position.y);
    }

});


/*
Script: Fx.Elements.js
Effect to change any number of CSS properties of any number of Elements.

License:
MIT-style license.
*/

Fx.Elements = new Class({

    Extends: Fx.CSS,

    initialize: function(elements, options) {
        this.elements = this.subject = $$(elements);
        this.parent(options);
    },

    compute: function(from, to, delta) {
        var now = {};
        for (var i in from) {
            var iFrom = from[i], iTo = to[i], iNow = now[i] = {};
            for (var p in iFrom) iNow[p] = this.parent(iFrom[p], iTo[p], delta);
        }
        return now;
    },

    set: function(now) {
        for (var i in now) {
            var iNow = now[i];
            for (var p in iNow) this.render(this.elements[i], p, iNow[p], this.options.unit);
        }
        return this;
    },

    start: function(obj) {
        if (!this.check(arguments.callee, obj)) return this;
        var from = {}, to = {};
        for (var i in obj) {
            var iProps = obj[i], iFrom = from[i] = {}, iTo = to[i] = {};
            for (var p in iProps) {
                var parsed = this.prepare(this.elements[i], p, iProps[p]);
                iFrom[p] = parsed.from;
                iTo[p] = parsed.to;
            }
        }
        return this.parent(from, to);
    }

});

/*
Script: Drag.js
The base Drag Class. Can be used to drag and resize Elements using mouse events.

License:
MIT-style license.
*/

var Drag = new Class({

    Implements: [Events, Options],

    options: {/*
		onBeforeStart: $empty,
		onStart: $empty,
		onDrag: $empty,
		onCancel: $empty,
		onComplete: $empty,*/
        snap: 6,
        unit: 'px',
        grid: false,
        style: true,
        limit: false,
        handle: false,
        invert: false,
        preventDefault: false,
        modifiers: { x: 'left', y: 'top' }
    },

    initialize: function() {
        var params = Array.link(arguments, { 'options': Object.type, 'element': $defined });
        this.element = $(params.element);
        this.document = this.element.getDocument();
        this.setOptions(params.options || {});
        var htype = $type(this.options.handle);
        this.handles = (htype == 'array' || htype == 'collection') ? $$(this.options.handle) : $(this.options.handle) || this.element;
        this.mouse = { 'now': {}, 'pos': {} };
        this.value = { 'start': {}, 'now': {} };

        this.selection = (Browser.Engine.trident) ? 'selectstart' : 'mousedown';

        this.bound = {
            start: this.start.bind(this),
            check: this.check.bind(this),
            drag: this.drag.bind(this),
            stop: this.stop.bind(this),
            cancel: this.cancel.bind(this),
            eventStop: $lambda(false)
        };
        this.attach();
    },

    attach: function() {
        this.handles.addEvent('mousedown', this.bound.start);
        return this;
    },

    detach: function() {
        this.handles.removeEvent('mousedown', this.bound.start);
        return this;
    },

    start: function(event) {
        if (this.options.preventDefault) event.preventDefault();
        this.fireEvent('beforeStart', this.element);
        this.mouse.start = event.page;
        var limit = this.options.limit;
        this.limit = { 'x': [], 'y': [] };
        for (var z in this.options.modifiers) {
            if (!this.options.modifiers[z]) continue;
            if (this.options.style) this.value.now[z] = this.element.getStyle(this.options.modifiers[z]).toInt();
            else this.value.now[z] = this.element[this.options.modifiers[z]];
            if (this.options.invert) this.value.now[z] *= -1;
            this.mouse.pos[z] = event.page[z] - this.value.now[z];
            if (limit && limit[z]) {
                for (var i = 2; i--; i) {
                    if ($chk(limit[z][i])) this.limit[z][i] = $lambda(limit[z][i])();
                }
            }
        }
        if ($type(this.options.grid) == 'number') this.options.grid = { 'x': this.options.grid, 'y': this.options.grid };
        this.document.addEvents({ mousemove: this.bound.check, mouseup: this.bound.cancel });
        this.document.addEvent(this.selection, this.bound.eventStop);
    },

    check: function(event) {
        if (this.options.preventDefault) event.preventDefault();
        var distance = Math.round(Math.sqrt(Math.pow(event.page.x - this.mouse.start.x, 2) + Math.pow(event.page.y - this.mouse.start.y, 2)));
        if (distance > this.options.snap) {
            this.cancel();
            this.document.addEvents({
                mousemove: this.bound.drag,
                mouseup: this.bound.stop
            });
            this.fireEvent('start', this.element).fireEvent('snap', this.element);
        }
    },

    drag: function(event) {
        if (this.options.preventDefault) event.preventDefault();
        this.mouse.now = event.page;
        for (var z in this.options.modifiers) {
            if (!this.options.modifiers[z]) continue;
            this.value.now[z] = this.mouse.now[z] - this.mouse.pos[z];
            if (this.options.invert) this.value.now[z] *= -1;
            if (this.options.limit && this.limit[z]) {
                if ($chk(this.limit[z][1]) && (this.value.now[z] > this.limit[z][1])) {
                    this.value.now[z] = this.limit[z][1];
                } else if ($chk(this.limit[z][0]) && (this.value.now[z] < this.limit[z][0])) {
                    this.value.now[z] = this.limit[z][0];
                }
            }
            if (this.options.grid[z]) this.value.now[z] -= (this.value.now[z] % this.options.grid[z]);
            if (this.options.style) this.element.setStyle(this.options.modifiers[z], this.value.now[z] + this.options.unit);
            else this.element[this.options.modifiers[z]] = this.value.now[z];
        }
        this.fireEvent('drag', this.element);
    },

    cancel: function(event) {
        this.document.removeEvent('mousemove', this.bound.check);
        this.document.removeEvent('mouseup', this.bound.cancel);
        if (event) {
            this.document.removeEvent(this.selection, this.bound.eventStop);
            this.fireEvent('cancel', this.element);
        }
    },

    stop: function(event) {
        this.document.removeEvent(this.selection, this.bound.eventStop);
        this.document.removeEvent('mousemove', this.bound.drag);
        this.document.removeEvent('mouseup', this.bound.stop);
        if (event) this.fireEvent('complete', this.element);
    }

});

Element.implement({

    makeResizable: function(options) {
        return new Drag(this, $merge({ modifiers: { 'x': 'width', 'y': 'height'} }, options));
    }

});

/*
Script: Drag.Move.js
A Drag extension that provides support for the constraining of draggables to containers and droppables.

License:
MIT-style license.
*/

Drag.Move = new Class({

    Extends: Drag,

    options: {
        droppables: [],
        container: false
    },

    initialize: function(element, options) {
        this.parent(element, options);
        this.droppables = $$(this.options.droppables);
        this.container = $(this.options.container);
        if (this.container && $type(this.container) != 'element') this.container = $(this.container.getDocument().body);
        element = this.element;

        var current = element.getStyle('position');
        var position = (current != 'static') ? current : 'absolute';
        if (element.getStyle('left') == 'auto' || element.getStyle('top') == 'auto') element.position(element.getPosition(element.offsetParent));

        element.setStyle('position', position);

        this.addEvent('start', function() {
            this.checkDroppables();
        }, true);
    },

    start: function(event) {
        if (this.container) {
            var el = this.element, cont = this.container, ccoo = cont.getCoordinates(el.offsetParent), cps = {}, ems = {};

            ['top', 'right', 'bottom', 'left'].each(function(pad) {
                cps[pad] = cont.getStyle('padding-' + pad).toInt();
                ems[pad] = el.getStyle('margin-' + pad).toInt();
            }, this);

            var width = el.offsetWidth + ems.left + ems.right, height = el.offsetHeight + ems.top + ems.bottom;
            var x = [ccoo.left + cps.left, ccoo.right - cps.right - width];
            var y = [ccoo.top + cps.top, ccoo.bottom - cps.bottom - height];

            this.options.limit = { x: x, y: y };
        }
        this.parent(event);
    },

    checkAgainst: function(el) {
        el = el.getCoordinates();
        var now = this.mouse.now;
        return (now.x > el.left && now.x < el.right && now.y < el.bottom && now.y > el.top);
    },

    checkDroppables: function() {
        var overed = this.droppables.filter(this.checkAgainst, this).getLast();
        if (this.overed != overed) {
            if (this.overed) this.fireEvent('leave', [this.element, this.overed]);
            if (overed) {
                this.overed = overed;
                this.fireEvent('enter', [this.element, overed]);
            } else {
                this.overed = null;
            }
        }
    },

    drag: function(event) {
        this.parent(event);
        if (this.droppables.length) this.checkDroppables();
    },

    stop: function(event) {
        this.checkDroppables();
        this.fireEvent('drop', [this.element, this.overed]);
        this.overed = null;
        return this.parent(event);
    }

});

Element.implement({

    makeDraggable: function(options) {
        return new Drag.Move(this, options);
    }

});


/*
Script: Hash.Cookie.js
Class for creating, reading, and deleting Cookies in JSON format.

License:
MIT-style license.
*/

Hash.Cookie = new Class({

    Extends: Cookie,

    options: {
        autoSave: true
    },

    initialize: function(name, options) {
        this.parent(name, options);
        this.load();
    },

    save: function() {
        var value = JSON.encode(this.hash);
        if (!value || value.length > 4096) return false; //cookie would be truncated!
        if (value == '{}') this.dispose();
        else this.write(value);
        return true;
    },

    load: function() {
        this.hash = new Hash(JSON.decode(this.read(), true));
        return this;
    }

});

Hash.Cookie.implement((function() {

    var methods = {};

    Hash.each(Hash.prototype, function(method, name) {
        methods[name] = function() {
            var value = method.apply(this.hash, arguments);
            if (this.options.autoSave) this.save();
            return value;
        };
    });

    return methods;

})());

/*
Script: Color.js
Class for creating and manipulating colors in JavaScript. Supports HSB -> RGB Conversions and vice versa.

License:
MIT-style license.
*/

var Color = new Native({

    initialize: function(color, type) {
        if (arguments.length >= 3) {
            type = "rgb"; color = Array.slice(arguments, 0, 3);
        } else if (typeof color == 'string') {
            if (color.match(/rgb/)) color = color.rgbToHex().hexToRgb(true);
            else if (color.match(/hsb/)) color = color.hsbToRgb();
            else color = color.hexToRgb(true);
        }
        type = type || 'rgb';
        switch (type) {
            case 'hsb':
                var old = color;
                color = color.hsbToRgb();
                color.hsb = old;
                break;
            case 'hex': color = color.hexToRgb(true); break;
        }
        color.rgb = color.slice(0, 3);
        color.hsb = color.hsb || color.rgbToHsb();
        color.hex = color.rgbToHex();
        return $extend(color, this);
    }

});

Color.implement({

    mix: function() {
        var colors = Array.slice(arguments);
        var alpha = ($type(colors.getLast()) == 'number') ? colors.pop() : 50;
        var rgb = this.slice();
        colors.each(function(color) {
            color = new Color(color);
            for (var i = 0; i < 3; i++) rgb[i] = Math.round((rgb[i] / 100 * (100 - alpha)) + (color[i] / 100 * alpha));
        });
        return new Color(rgb, 'rgb');
    },

    invert: function() {
        return new Color(this.map(function(value) {
            return 255 - value;
        }));
    },

    setHue: function(value) {
        return new Color([value, this.hsb[1], this.hsb[2]], 'hsb');
    },

    setSaturation: function(percent) {
        return new Color([this.hsb[0], percent, this.hsb[2]], 'hsb');
    },

    setBrightness: function(percent) {
        return new Color([this.hsb[0], this.hsb[1], percent], 'hsb');
    }

});

function $RGB(r, g, b) {
    return new Color([r, g, b], 'rgb');
};

function $HSB(h, s, b) {
    return new Color([h, s, b], 'hsb');
};

function $HEX(hex) {
    return new Color(hex, 'hex');
};

Array.implement({

    rgbToHsb: function() {
        var red = this[0], green = this[1], blue = this[2];
        var hue, saturation, brightness;
        var max = Math.max(red, green, blue), min = Math.min(red, green, blue);
        var delta = max - min;
        brightness = max / 255;
        saturation = (max != 0) ? delta / max : 0;
        if (saturation == 0) {
            hue = 0;
        } else {
            var rr = (max - red) / delta;
            var gr = (max - green) / delta;
            var br = (max - blue) / delta;
            if (red == max) hue = br - gr;
            else if (green == max) hue = 2 + rr - br;
            else hue = 4 + gr - rr;
            hue /= 6;
            if (hue < 0) hue++;
        }
        return [Math.round(hue * 360), Math.round(saturation * 100), Math.round(brightness * 100)];
    },

    hsbToRgb: function() {
        var br = Math.round(this[2] / 100 * 255);
        if (this[1] == 0) {
            return [br, br, br];
        } else {
            var hue = this[0] % 360;
            var f = hue % 60;
            var p = Math.round((this[2] * (100 - this[1])) / 10000 * 255);
            var q = Math.round((this[2] * (6000 - this[1] * f)) / 600000 * 255);
            var t = Math.round((this[2] * (6000 - this[1] * (60 - f))) / 600000 * 255);
            switch (Math.floor(hue / 60)) {
                case 0: return [br, t, p];
                case 1: return [q, br, p];
                case 2: return [p, br, t];
                case 3: return [p, q, br];
                case 4: return [t, p, br];
                case 5: return [br, p, q];
            }
        }
        return false;
    }

});

String.implement({

    rgbToHsb: function() {
        var rgb = this.match(/\d{1,3}/g);
        return (rgb) ? hsb.rgbToHsb() : null;
    },

    hsbToRgb: function() {
        var hsb = this.match(/\d{1,3}/g);
        return (hsb) ? hsb.hsbToRgb() : null;
    }

});


/*
Script: Group.js
Class for monitoring collections of events

License:
MIT-style license.
*/

var Group = new Class({

    initialize: function() {
        this.instances = Array.flatten(arguments);
        this.events = {};
        this.checker = {};
    },

    addEvent: function(type, fn) {
        this.checker[type] = this.checker[type] || {};
        this.events[type] = this.events[type] || [];
        if (this.events[type].contains(fn)) return false;
        else this.events[type].push(fn);
        this.instances.each(function(instance, i) {
            instance.addEvent(type, this.check.bind(this, [type, instance, i]));
        }, this);
        return this;
    },

    check: function(type, instance, i) {
        this.checker[type][i] = true;
        var every = this.instances.every(function(current, j) {
            return this.checker[type][j] || false;
        }, this);
        if (!every) return;
        this.checker[type] = {};
        this.events[type].each(function(event) {
            event.call(this, this.instances, instance);
        }, this);
    }

});


/*
Script: Assets.js
Provides methods to dynamically load JavaScript, CSS, and Image files into the document.

License:
MIT-style license.
*/

var Asset = new Hash({

    javascript: function(source, properties) {
        properties = $extend({
            onload: $empty,
            document: document,
            check: $lambda(true)
        }, properties);

        var script = new Element('script', { 'src': source, 'type': 'text/javascript' });

        var load = properties.onload.bind(script), check = properties.check, doc = properties.document;
        delete properties.onload; delete properties.check; delete properties.document;

        script.addEvents({
            load: load,
            readystatechange: function() {
                if (['loaded', 'complete'].contains(this.readyState)) load();
            }
        }).setProperties(properties);


        if (Browser.Engine.webkit419) var checker = (function() {
            if (!$try(check)) return;
            $clear(checker);
            load();
        }).periodical(50);

        return script.inject(doc.head);
    },

    css: function(source, properties) {
        return new Element('link', $merge({
            'rel': 'stylesheet', 'media': 'screen', 'type': 'text/css', 'href': source
        }, properties)).inject(document.head);
    },

    image: function(source, properties) {
        properties = $merge({
            'onload': $empty,
            'onabort': $empty,
            'onerror': $empty
        }, properties);
        var image = new Image();
        var element = $(image) || new Element('img');
        ['load', 'abort', 'error'].each(function(name) {
            var type = 'on' + name;
            var event = properties[type];
            delete properties[type];
            image[type] = function() {
                if (!image) return;
                if (!element.parentNode) {
                    element.width = image.width;
                    element.height = image.height;
                }
                image = image.onload = image.onabort = image.onerror = null;
                event.delay(1, element, element);
                element.fireEvent(name, element, 1);
            };
        });
        image.src = element.src = source;
        if (image && image.complete) image.onload.delay(1);
        return element.setProperties(properties);
    },

    images: function(sources, options) {
        options = $merge({
            onComplete: $empty,
            onProgress: $empty
        }, options);
        if (!sources.push) sources = [sources];
        var images = [];
        var counter = 0;
        sources.each(function(source) {
            var img = new Asset.image(source, {
                'onload': function() {
                    options.onProgress.call(this, counter, sources.indexOf(source));
                    counter++;
                    if (counter == sources.length) options.onComplete();
                }
            });
            images.push(img);
        });
        return new Elements(images);
    }

});

/*
Script: Sortables.js
Class for creating a drag and drop sorting interface for lists of items.

License:
MIT-style license.
*/

var Sortables = new Class({

    Implements: [Events, Options],

    options: {/*
		onSort: $empty,
		onStart: $empty,
		onComplete: $empty,*/
        snap: 4,
        opacity: 1,
        clone: false,
        revert: false,
        handle: false,
        constrain: false
    },

    initialize: function(lists, options) {
        this.setOptions(options);
        this.elements = [];
        this.lists = [];
        this.idle = true;

        this.addLists($$($(lists) || lists));
        if (!this.options.clone) this.options.revert = false;
        if (this.options.revert) this.effect = new Fx.Morph(null, $merge({ duration: 250, link: 'cancel' }, this.options.revert));
    },

    attach: function() {
        this.addLists(this.lists);
        return this;
    },

    detach: function() {
        this.lists = this.removeLists(this.lists);
        return this;
    },

    addItems: function() {
        Array.flatten(arguments).each(function(element) {
            this.elements.push(element);
            var start = element.retrieve('sortables:start', this.start.bindWithEvent(this, element));
            (this.options.handle ? element.getElement(this.options.handle) || element : element).addEvent('mousedown', start);
        }, this);
        return this;
    },

    addLists: function() {
        Array.flatten(arguments).each(function(list) {
            this.lists.push(list);
            this.addItems(list.getChildren());
        }, this);
        return this;
    },

    removeItems: function() {
        var elements = [];
        Array.flatten(arguments).each(function(element) {
            elements.push(element);
            this.elements.erase(element);
            var start = element.retrieve('sortables:start');
            (this.options.handle ? element.getElement(this.options.handle) || element : element).removeEvent('mousedown', start);
        }, this);
        return $$(elements);
    },

    removeLists: function() {
        var lists = [];
        Array.flatten(arguments).each(function(list) {
            lists.push(list);
            this.lists.erase(list);
            this.removeItems(list.getChildren());
        }, this);
        return $$(lists);
    },

    getClone: function(event, element) {
        if (!this.options.clone) return new Element('div').inject(document.body);
        if ($type(this.options.clone) == 'function') return this.options.clone.call(this, event, element, this.list);
        return element.clone(true).setStyles({
            'margin': '0px',
            'position': 'absolute',
            'visibility': 'hidden',
            'width': element.getStyle('width')
        }).inject(this.list).position(element.getPosition(element.getOffsetParent()));
    },

    getDroppables: function() {
        var droppables = this.list.getChildren();
        if (!this.options.constrain) droppables = this.lists.concat(droppables).erase(this.list);
        return droppables.erase(this.clone).erase(this.element);
    },

    insert: function(dragging, element) {
        var where = 'inside';
        if (this.lists.contains(element)) {
            this.list = element;
            this.drag.droppables = this.getDroppables();
        } else {
            where = this.element.getAllPrevious().contains(element) ? 'before' : 'after';
        }
        this.element.inject(element, where);
        this.fireEvent('sort', [this.element, this.clone]);
    },

    start: function(event, element) {
        if (!this.idle) return;
        this.idle = false;
        this.element = element;
        this.opacity = element.get('opacity');
        this.list = element.getParent();
        this.clone = this.getClone(event, element);

        this.drag = new Drag.Move(this.clone, {
            snap: this.options.snap,
            container: this.options.constrain && this.element.getParent(),
            droppables: this.getDroppables(),
            onSnap: function() {
                event.stop();
                this.clone.setStyle('visibility', 'visible');
                this.element.set('opacity', this.options.opacity || 0);
                this.fireEvent('start', [this.element, this.clone]);
            } .bind(this),
            onEnter: this.insert.bind(this),
            onCancel: this.reset.bind(this),
            onComplete: this.end.bind(this)
        });

        this.clone.inject(this.element, 'before');
        this.drag.start(event);
    },

    end: function() {
        this.drag.detach();
        this.element.set('opacity', this.opacity);
        if (this.effect) {
            var dim = this.element.getStyles('width', 'height');
            var pos = this.clone.computePosition(this.element.getPosition(this.clone.offsetParent));
            this.effect.element = this.clone;
            this.effect.start({
                top: pos.top,
                left: pos.left,
                width: dim.width,
                height: dim.height,
                opacity: 0.25
            }).chain(this.reset.bind(this));
        } else {
            this.reset();
        }
    },

    reset: function() {
        this.idle = true;
        this.clone.destroy();
        this.fireEvent('complete', this.element);
    },

    serialize: function() {
        var params = Array.link(arguments, { modifier: Function.type, index: $defined });
        var serial = this.lists.map(function(list) {
            return list.getChildren().map(params.modifier || function(element) {
                return element.get('id');
            }, this);
        }, this);

        var index = params.index;
        if (this.lists.length == 1) index = 0;
        return $chk(index) && index >= 0 && index < this.lists.length ? serial[index] : serial;
    }

});

/*
Script: Tips.js
Class for creating nice tips that follow the mouse cursor when hovering an element.

License:
MIT-style license.
*/

var Tips = new Class({

    Implements: [Events, Options],

    options: {
        onShow: function(tip) {
            tip.setStyle('visibility', 'visible');
        },
        onHide: function(tip) {
            tip.setStyle('visibility', 'hidden');
        },
        showDelay: 100,
        hideDelay: 100,
        className: null,
        offsets: { x: 16, y: 16 },
        fixed: false
    },

    initialize: function() {
        var params = Array.link(arguments, { options: Object.type, elements: $defined });
        this.setOptions(params.options || null);

        this.tip = new Element('div').inject(document.body);

        if (this.options.className) this.tip.addClass(this.options.className);

        var top = new Element('div', { 'class': 'tip-top' }).inject(this.tip);
        this.container = new Element('div', { 'class': 'tip' }).inject(this.tip);
        var bottom = new Element('div', { 'class': 'tip-bottom' }).inject(this.tip);

        this.tip.setStyles({ position: 'absolute', top: 0, left: 0, visibility: 'hidden' });

        if (params.elements) this.attach(params.elements);
    },

    attach: function(elements) {
        $$(elements).each(function(element) {
            var title = element.retrieve('tip:title', element.get('title'));
            var text = element.retrieve('tip:text', element.get('rel') || element.get('href'));
            var enter = element.retrieve('tip:enter', this.elementEnter.bindWithEvent(this, element));
            var leave = element.retrieve('tip:leave', this.elementLeave.bindWithEvent(this, element));
            element.addEvents({ mouseenter: enter, mouseleave: leave });
            if (!this.options.fixed) {
                var move = element.retrieve('tip:move', this.elementMove.bindWithEvent(this, element));
                element.addEvent('mousemove', move);
            }
            element.store('tip:native', element.get('title'));
            element.erase('title');
        }, this);
        return this;
    },

    detach: function(elements) {
        $$(elements).each(function(element) {
            element.removeEvent('mouseenter', element.retrieve('tip:enter') || $empty);
            element.removeEvent('mouseleave', element.retrieve('tip:leave') || $empty);
            element.removeEvent('mousemove', element.retrieve('tip:move') || $empty);
            element.eliminate('tip:enter').eliminate('tip:leave').eliminate('tip:move');
            var original = element.retrieve('tip:native');
            if (original) element.set('title', original);
        });
        return this;
    },

    elementEnter: function(event, element) {

        $A(this.container.childNodes).each(Element.dispose);

        var title = element.retrieve('tip:title');

        if (title) {
            this.titleElement = new Element('div', { 'class': 'tip-title' }).inject(this.container);
            this.fill(this.titleElement, title);
        }

        var text = element.retrieve('tip:text');
        if (text) {
            this.textElement = new Element('div', { 'class': 'tip-text' }).inject(this.container);
            this.fill(this.textElement, text);
        }

        this.timer = $clear(this.timer);
        this.timer = this.show.delay(this.options.showDelay, this);

        this.position((!this.options.fixed) ? event : { page: element.getPosition() });
    },

    elementLeave: function(event) {
        $clear(this.timer);
        this.timer = this.hide.delay(this.options.hideDelay, this);
    },

    elementMove: function(event) {
        this.position(event);
    },

    position: function(event) {
        var size = window.getSize(), scroll = window.getScroll();
        var tip = { x: this.tip.offsetWidth, y: this.tip.offsetHeight };
        var props = { x: 'left', y: 'top' };
        for (var z in props) {
            var pos = event.page[z] + this.options.offsets[z];
            if ((pos + tip[z] - scroll[z]) > size[z]) pos = event.page[z] - this.options.offsets[z] - tip[z];
            this.tip.setStyle(props[z], pos);
        }
    },

    fill: function(element, contents) {
        (typeof contents == 'string') ? element.set('html', contents) : element.adopt(contents);
    },

    show: function() {
        this.fireEvent('show', this.tip);
    },

    hide: function() {
        this.fireEvent('hide', this.tip);
    }

});

/*
Script: SmoothScroll.js
Class for creating a smooth scrolling effect to all internal links on the page.

License:
MIT-style license.
*/

var SmoothScroll = new Class({

    Extends: Fx.Scroll,

    initialize: function(options, context) {
        context = context || document;
        var doc = context.getDocument(), win = context.getWindow();
        this.parent(doc, options);
        this.links = (this.options.links) ? $$(this.options.links) : $$(doc.links);
        var location = win.location.href.match(/^[^#]*/)[0] + '#';
        this.links.each(function(link) {
            if (link.href.indexOf(location) != 0) return;
            var anchor = link.href.substr(location.length);
            if (anchor && $(anchor)) this.useLink(link, anchor);
        }, this);
        if (!Browser.Engine.webkit419) this.addEvent('complete', function() {
            win.location.hash = this.anchor;
        }, true);
    },

    useLink: function(link, anchor) {
        link.addEvent('click', function(event) {
            this.anchor = anchor;
            this.toElement(anchor);
            event.stop();
        } .bind(this));
    }

});

/*
Script: Slider.js
Class for creating horizontal and vertical slider controls.

License:
MIT-style license.
*/

var Slider = new Class({

    Implements: [Events, Options],

    options: {/*
		onChange: $empty,
		onComplete: $empty,*/
        onTick: function(position) {
            if (this.options.snap) position = this.toPosition(this.step);
            this.knob.setStyle(this.property, position);
        },
        snap: false,
        offset: 0,
        range: false,
        wheel: false,
        steps: 100,
        mode: 'horizontal'
    },

    initialize: function(element, knob, options) {
        this.setOptions(options);
        this.element = $(element);
        this.knob = $(knob);
        this.previousChange = this.previousEnd = this.step = -1;
        this.element.addEvent('mousedown', this.clickedElement.bind(this));
        if (this.options.wheel) this.element.addEvent('mousewheel', this.scrolledElement.bindWithEvent(this));
        var offset, limit = {}, modifiers = { 'x': false, 'y': false };
        switch (this.options.mode) {
            case 'vertical':
                this.axis = 'y';
                this.property = 'top';
                offset = 'offsetHeight';
                break;
            case 'horizontal':
                this.axis = 'x';
                this.property = 'left';
                offset = 'offsetWidth';
        }
        this.half = this.knob[offset] / 2;
        this.full = this.element[offset] - this.knob[offset] + (this.options.offset * 2);
        this.min = $chk(this.options.range[0]) ? this.options.range[0] : 0;
        this.max = $chk(this.options.range[1]) ? this.options.range[1] : this.options.steps;
        this.range = this.max - this.min;
        this.steps = this.options.steps || this.full;
        this.stepSize = Math.abs(this.range) / this.steps;
        this.stepWidth = this.stepSize * this.full / Math.abs(this.range);

        this.knob.setStyle('position', 'relative').setStyle(this.property, -this.options.offset);
        modifiers[this.axis] = this.property;
        limit[this.axis] = [-this.options.offset, this.full - this.options.offset];
        this.drag = new Drag(this.knob, {
            snap: 0,
            limit: limit,
            modifiers: modifiers,
            onDrag: this.draggedKnob.bind(this),
            onStart: this.draggedKnob.bind(this),
            onComplete: function() {
                this.draggedKnob();
                this.end();
            } .bind(this)
        });
        if (this.options.snap) {
            this.drag.options.grid = Math.ceil(this.stepWidth);
            this.drag.options.limit[this.axis][1] = this.full;
        }
    },

    set: function(step) {
        if (!((this.range > 0) ^ (step < this.min))) step = this.min;
        if (!((this.range > 0) ^ (step > this.max))) step = this.max;

        this.step = Math.round(step);
        this.checkStep();
        this.end();
        this.fireEvent('tick', this.toPosition(this.step));
        return this;
    },

    clickedElement: function(event) {
        var dir = this.range < 0 ? -1 : 1;
        var position = event.page[this.axis] - this.element.getPosition()[this.axis] - this.half;
        position = position.limit(-this.options.offset, this.full - this.options.offset);

        this.step = Math.round(this.min + dir * this.toStep(position));
        this.checkStep();
        this.end();
        this.fireEvent('tick', position);
    },

    scrolledElement: function(event) {
        var mode = (this.options.mode == 'horizontal') ? (event.wheel < 0) : (event.wheel > 0);
        this.set(mode ? this.step - this.stepSize : this.step + this.stepSize);
        event.stop();
    },

    draggedKnob: function() {
        var dir = this.range < 0 ? -1 : 1;
        var position = this.drag.value.now[this.axis];
        position = position.limit(-this.options.offset, this.full - this.options.offset);
        this.step = Math.round(this.min + dir * this.toStep(position));
        this.checkStep();
    },

    checkStep: function() {
        if (this.previousChange != this.step) {
            this.previousChange = this.step;
            this.fireEvent('change', this.step);
        }
    },

    end: function() {
        if (this.previousEnd !== this.step) {
            this.previousEnd = this.step;
            this.fireEvent('complete', this.step + '');
        }
    },

    toStep: function(position) {
        var step = (position + this.options.offset) * this.stepSize / this.full * this.steps;
        return this.options.steps ? Math.round(step -= step % this.stepSize) : step;
    },

    toPosition: function(step) {
        return (this.full * Math.abs(this.min - step)) / (this.steps * this.stepSize) - this.options.offset;
    }

});

/*
Script: Scroller.js
Class which scrolls the contents of any Element (including the window) when the mouse reaches the Element's boundaries.

License:
MIT-style license.
*/

var Scroller = new Class({

    Implements: [Events, Options],

    options: {
        area: 20,
        velocity: 1,
        onChange: function(x, y) {
            this.element.scrollTo(x, y);
        }
    },

    initialize: function(element, options) {
        this.setOptions(options);
        this.element = $(element);
        this.listener = ($type(this.element) != 'element') ? $(this.element.getDocument().body) : this.element;
        this.timer = null;
        this.coord = this.getCoords.bind(this);
    },

    start: function() {
        this.listener.addEvent('mousemove', this.coord);
    },

    stop: function() {
        this.listener.removeEvent('mousemove', this.coord);
        this.timer = $clear(this.timer);
    },

    getCoords: function(event) {
        this.page = (this.listener.get('tag') == 'body') ? event.client : event.page;
        if (!this.timer) this.timer = this.scroll.periodical(50, this);
    },

    scroll: function() {
        var size = this.element.getSize(), scroll = this.element.getScroll(), pos = this.element.getPosition(), change = { 'x': 0, 'y': 0 };
        for (var z in this.page) {
            if (this.page[z] < (this.options.area + pos[z]) && scroll[z] != 0)
                change[z] = (this.page[z] - this.options.area - pos[z]) * this.options.velocity;
            else if (this.page[z] + this.options.area > (size[z] + pos[z]) && size[z] + size[z] != scroll[z])
                change[z] = (this.page[z] - size[z] + this.options.area - pos[z]) * this.options.velocity;
        }
        if (change.y || change.x) this.fireEvent('change', [scroll.x + change.x, scroll.y + change.y]);
    }

});

/*
Script: Accordion.js
An Fx.Elements extension which allows you to easily create accordion type controls.

License:
MIT-style license.
*/

var Accordion = new Class({

    Extends: Fx.Elements,

    options: {/*
		onActive: $empty,
		onBackground: $empty,*/
        display: 0,
        show: false,
        height: true,
        width: false,
        opacity: true,
        fixedHeight: false,
        fixedWidth: false,
        wait: false,
        alwaysHide: false
    },

    initialize: function() {
        var params = Array.link(arguments, { 'container': Element.type, 'options': Object.type, 'togglers': $defined, 'elements': $defined });
        this.parent(params.elements, params.options);
        this.togglers = $$(params.togglers);
        this.container = $(params.container);
        this.previous = -1;
        if (this.options.alwaysHide) this.options.wait = true;
        if ($chk(this.options.show)) {
            this.options.display = false;
            this.previous = this.options.show;
        }
        if (this.options.start) {
            this.options.display = false;
            this.options.show = false;
        }
        this.effects = {};
        if (this.options.opacity) this.effects.opacity = 'fullOpacity';
        if (this.options.width) this.effects.width = this.options.fixedWidth ? 'fullWidth' : 'offsetWidth';
        if (this.options.height) this.effects.height = this.options.fixedHeight ? 'fullHeight' : 'scrollHeight';
        for (var i = 0, l = this.togglers.length; i < l; i++) this.addSection(this.togglers[i], this.elements[i]);
        this.elements.each(function(el, i) {
            if (this.options.show === i) {
                this.fireEvent('active', [this.togglers[i], el]);
            } else {
                for (var fx in this.effects) el.setStyle(fx, 0);
            }
        }, this);
        if ($chk(this.options.display)) this.display(this.options.display);
    },

    addSection: function(toggler, element, pos) {
        toggler = $(toggler);
        element = $(element);
        var test = this.togglers.contains(toggler);
        var len = this.togglers.length;
        this.togglers.include(toggler);
        this.elements.include(element);
        if (len && (!test || pos)) {
            pos = $pick(pos, len - 1);
            toggler.inject(this.togglers[pos], 'before');
            element.inject(toggler, 'after');
        } else if (this.container && !test) {
            toggler.inject(this.container);
            element.inject(this.container);
        }
        var idx = this.togglers.indexOf(toggler);
        toggler.addEvent('click', this.display.bind(this, idx));
        if (this.options.height) element.setStyles({ 'padding-top': 0, 'border-top': 'none', 'padding-bottom': 0, 'border-bottom': 'none' });
        if (this.options.width) element.setStyles({ 'padding-left': 0, 'border-left': 'none', 'padding-right': 0, 'border-right': 'none' });
        element.fullOpacity = 1;
        if (this.options.fixedWidth) element.fullWidth = this.options.fixedWidth;
        if (this.options.fixedHeight) element.fullHeight = this.options.fixedHeight;
        element.setStyle('overflow', 'hidden');
        if (!test) {
            for (var fx in this.effects) element.setStyle(fx, 0);
        }
        return this;
    },

    display: function(index) {
        index = ($type(index) == 'element') ? this.elements.indexOf(index) : index;
        if ((this.timer && this.options.wait) || (index === this.previous && !this.options.alwaysHide)) return this;
        this.previous = index;
        var obj = {};
        this.elements.each(function(el, i) {
            obj[i] = {};
            var hide = (i != index) || (this.options.alwaysHide && (el.offsetHeight > 0));
            this.fireEvent(hide ? 'background' : 'active', [this.togglers[i], el]);
            for (var fx in this.effects) obj[i][fx] = hide ? 0 : el[this.effects[fx]];
        }, this);
        return this.start(obj);
    }

});